Cannot find autoconf. Please check your autoconf installation and the $PHP_AUTOCONF environment variable

[root@localhost gd]# /usr/local/bin/phpize 

Configuring for:

PHP Api Version:         20090626

Zend Module Api No:      20090626

Zend Extension Api No:   220090626

Cannot find autoconf. Please check your autoconf installation and the $PHP_AUTOCONF environment variable. Then, rerun this script.

这是什么情况？？？经过各种尝试，终于发现，少安装了一个软件包

[root@localhost gd]# yum install autoconf

[root@localhost gd]# /usr/local/bin/phpize 
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原文链接：https://blog.csdn.net/avilifans/article/details/12972317